>>> word = "python"
>>> word[0]
'p'
>>> word[0] = 'P'
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'str' object does not support item assignment
>>> l = ['p', 'y', 't', 'h', 'o', 'n']
>>> l[0]
'p'
>>> l[0] = 'P'
>>> l
['P', 'y', 't', 'h', 'o', 'n']
>>> tup = (1, 3, 'two', 4.5)
>>> print tup
(1, 3, 'two', 4.5)
>>> tup[1]
3
>>> len(tup)
4
>>> tup(0)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'tuple' object is not callable
>>> tup[0]
1
>>> tup[0] = "new"
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'tuple' object does not support item assignment
>>> list = [1, 2, "two", 4.5]
>>> print list
[1, 2, 'two', 4.5]
>>> print list[2]
two
>>> print list[5]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
IndexError: list index out of range
>>> list[2] = "tre"
>>> list
[1, 2, 'tre', 4.5]
>>> table = [[1, 2, 4], [3, 6, 10]]
>>> table
[[1, 2, 4], [3, 6, 10]]
>>> print table[0]
[1, 2, 4]
>>> table[0
...  ]
[1, 2, 4]
>>> table[0] = [-3, -2, -1]
>>> table
[[-3, -2, -1], [3, 6, 10]]
>>> print table[0][]
  File "<stdin>", line 1
    print table[0][]
                   ^
SyntaxError: invalid syntax
>>> print table[0][0]
-3
>>> table[1,0]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: list indices must be integers, not tuple
>>> table[1][0] = 13
>>> table
[[-3, -2, -1], [13, 6, 10]]
>>> tup = 1,2
>>> tup
(1, 2)
>>> tup = 1,2,3,4
>>> tup
(1, 2, 3, 4)
>>> tup[2]
3
>>> tup[-1]
4
>>> tup2 = (5,4,3,2,1)
>>> tup2
(5, 4, 3, 2, 1)
>>> tup.append(tup2)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'tuple' object has no attribute 'append'
>>> tup = tup + tup2
>>> tup
(1, 2, 3, 4, 5, 4, 3, 2, 1)
>>> tup2
(5, 4, 3, 2, 1)
>>> nestList = [[1, 2], [1, 4, 6], [3, 5, 10, 16]]
>>> nestList[0][3]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
IndexError: list index out of range
>>> nestList[2][3]
16